I think I've found the source of the issue - there is currently no user called sageosity in our system, so an account with that name was never actually created. The email you provided is also not in our database.

Since there's already a site called sageosity.wordpress.com (yours), you won't be able to register that username on your end, so here's what I've done:

I created a new user account for you, with the name sageosity and the email you provided.

You should receive an email with a temporary password. Be sure to log out of your existing WordPress.com account before logging into this new one.

Let me know if you're able to log in OK here under the sageosity user account:

I've gone ahead and transferred ownership of the site sageosity.wordpress.com to the user sageosity, and removed the user promiseofcookies from it.

You should now be able to log into sageosity.wordpress.com through the new user account, sageosity. Having different users for separate sites can be tricky, because browsers often store information about the accounts and sites, which can sometimes result in "crossed wires."

To keep everything separate, you'll want to be mindful of logging out of one account before logging into the other - or better yet, you could try using one browser (such as Safari) for one account and a different browser (such as Firefox or Chrome) for the other.